Leverage is this thing

If you use it well, it will be candied candy.

If you don't use it well, it will become a poisonous snake and beast.

for example

In what fields is it used?

when to use

How much leverage to use, etc.

The tool itself does not have any good or bad attributes

A knife, you can use it to kill people

You can also use it to chop vegetables and make a delicious meal

so

The key is the people who use it